import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'
import GoodList from './components/goods/list.vue'
import Add from './components/goods/add.vue'
import Order from './components/order/Order.vue'
import Report from './components/report/Report.vue'

Vue.use(Router)

const router = new Router({
  routes: [
    { path:  '/'  ,  redirect: '/login'  },
    { path:  '/login'  ,  component:Login  },
    { path:  '/home'  ,  component:Home, 
    redirect:'/welcome',
    children:[
      { path:'/welcome',component:Welcome },
      { path:'/users',component:Users },
      { path:'/rights',component:Rights},
      { path:'/roles',component:Roles},
      { path:'/categories',component:Cate},
      { path:'/params',component:Params},
      { path:'/goods',component:GoodList},
      { path:'/goods/add' ,component:Add},
      { path:'/orders' ,component:Order},
      { path:'/reports' ,component:Report}
    ]  }
  ]
})

//挂载路由导航守卫

router.beforeEach((to,from,next) => {
  //to将要访问的路径
  //from表示从哪个路径跳转而来
  //next 是一个函数，表示方形
  // next()放行 next('/login')强制跳转
  if(to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})

export default router
